Improvement in panoramic school apparatus



A. P. M. fiEFFERS.

Improvement in Panoramic Sc-hooi Apparatus.

NO-, 12Q,O72. Patented 0ct.17,1871.

AM PHaTai/musmHi/C m. M X lama/M 519 Maaisx/ NI'IED STATES PATENT OFFICE.

A. PERLEY M. JEFFERS. OF ALLEGAN, MICHIGAN, ASSIGNOR TO HIMSELF, MILTON G. JEFFERS, AND EUGENE F. BEEOHER.

IMPROVEMENT IN PANORAMIC SCHOOL APPARATUS.

Specification forming part of Letters Patent No. 120,072, dated October 17, 1871.

To all whom it may concern:

Be it known that I, A. PERLEY M. J nrrnns, of Allegan, in the county of Allegan and State of Michigan, have invented and made an proveinent in Panoramic School Apparatus; and the following is declared to be a full and clear description thereof.

School apparatus has before been made with a cylinder containing alphabet letters and pictures illustrative of the lesson to be taught, and a sliding screen has been employed to cover up portions of the cylinder and thereby direct attention only to the portions of the surface that are not covered. Apparatus of this kind is shown in Letters Patent No. 98,773, granted to me J anuary l1,1870. In this device the size of the cylinder rendered the apparatus large and cumbersome, and there was but a comparatively small surface upon which pictures, letters, words, or sentences could be displayed.

My invention is made for simplifying the apparatus, enlarging the surface upon which the objects are printed, more easily directing atten tion to one object, and making the apparatus very compact and portable.

In the drawing, Figure 1 is a front elevation of the apparatus. Fig. 3 is a sectional plan at the line 00 m, and Fig. 3 is a vertical section at the line y 1 The pictures, letters, numbers, words, sentences, or other objects for instruction are printed, painted, or affixed to a panoramic curtain, a, that is wound upon rollers 12 and c and extends across in front of a plate, 01; and this plate 01 and the rollers 12 andc are sustained within the box formed of the top 0, bottom f, back g, ends h, and front 70, and the projecting ends of the rollers 11 c are provided with milled heads or handles by which they may be turned to draw the curtain from one roller upon the other. The face of the plate dis preferably covered with Oanton-flann el, to slightly hold the curtain and prevent its falling by gravity if the upper roller should be turned the wrong way. The intention is that only the upper roller shall be turned in drawing up the curtain, and

the lower roller in drawing it down, in order that slackness in the curtain may be prevented; hence, by the operator noticing that the curtain does not move when the rollers are turned, attention will be directed to the fact that the roller is being turned the wrong way. The front It is made with an opening in front of the curtain of a size suffi- 'cient to show the largest objects on the said ourtain, and a frame, I, is employed behind this opening that is hung by straps from a roller, m; hence said frame can be lowered so as to lessen the width through which the curtain is visible, or else lowered entirely, as in Fig. 1, so that the object will be seen through the contracted opening in the frame. The sliding screens 1" ands are shown as made of wooden slat-s upon a canvas back somewhat like those in aforesaid patent, and they are manipulated so as to leave between them the proper opening for showing the letters, numbers, pictures, or eharacters, as required in teaching primary classes or scholars. These horizontal screens may be constructed in any desired manner, such as folded flexible screens or fans 5 or the screens may be wound upon spring-rollers and held to the place where drawn out by springcatches or similar devices.

I claim as my invention- 1. The panoramic curtain a mounted upon rollers b and c, in combination with the screens moving horizontally to cover portions of the panoramic curtain, substantially as and for the purposes set forth.

2. The panoramic curtain and vertically-moving frame l, in combination with the box containing the apparatus and the horizontal moving screens, as and for the purposes set forth.

3. The plate (I covered with Canton-flannel or equivalent material, in combination with the panoramic curtain, for the purposes specified.

Signed by me this 18th day of July, 1871.

A. PERLEY M. J EFFERS. 

